CN113113193A - Three-umbrella-shaped disk-shaped suspension insulator - Google Patents
Three-umbrella-shaped disk-shaped suspension insulator Download PDFInfo
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- CN113113193A CN113113193A CN202110526447.2A CN202110526447A CN113113193A CN 113113193 A CN113113193 A CN 113113193A CN 202110526447 A CN202110526447 A CN 202110526447A CN 113113193 A CN113113193 A CN 113113193A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/46—Means for providing an external arc-discharge path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to the technical field of insulators and provides a three-umbrella-shaped disc-shaped suspension insulator which comprises an insulator, a steel cap and steel feet, wherein the insulator comprises a disc-shaped umbrella skirt and a cap-shaped head, and semiconductor glaze is arranged on the surface of the disc-shaped umbrella skirt. The disc-shaped umbrella skirt comprises a first umbrella skirt, a second umbrella skirt and a third umbrella skirt, the first umbrella skirt comprises a first umbrella rib, a second umbrella rib and a third umbrella rib which are sequentially arranged from left to right, the bottoms of the first umbrella rib, the second umbrella rib and the third umbrella rib are positioned on the same horizontal line, and a plurality of grooves are formed in one side of the third umbrella rib; the lower skirt edge of the third umbrella skirt is provided with an arc-shaped bulge upwards from the bottom, the upper skirt edge is provided with an arc-shaped recess upwards from the bottom, and the maximum umbrella extension of the first umbrella skirt is sequentially larger than the maximum umbrella extension of the second umbrella skirt and the third umbrella skirt. The invention has the functions of pollution prevention and self-cleaning, prevents flashover, and can greatly improve the creepage distance and the voltage impact resistance of the insulator under the condition of ensuring the mechanical strength.
Description
Technical Field
The invention relates to the technical field of insulators, in particular to a three-umbrella-shaped disc-shaped suspension insulator.
Background
Insulators are devices that can withstand the action of voltage and mechanical stress, mounted between conductors of different electrical potentials or between a conductor and a grounded member. The insulator is a special insulating control and can play an important role in an overhead transmission line; it is intended to increase the creepage distance and is usually made of glass or ceramic. The existing porcelain insulator generally comprises an insulator porcelain piece, a steel cap and a steel pin. The steel cap is generally fixed on the insulator porcelain piece through adhesives such as cement, the steel feet are fixed on the lower portion of the insulator porcelain piece through the adhesives such as cement, and the adjacent insulators are clamped together through the convex blocks on the steel feet and the clamping grooves on the steel cap and are fixed through the locking pins.
The creepage distance of current insulator is shorter, and resistant dirt ability is lower, can cause the insulator to appear the phenomenon of discharging easily, can lead to transmission of electricity equipment to produce electric arc, takes place the pollution flashover accident. The creepage distance of the insulator can be increased by adding the umbrella edge under the umbrella skirt in the technology, but the following problems still exist: the short distance between the umbrella edge and the adjacent umbrella skirt can cause the problem of dirt accumulation, and the shape and the angle of the upper skirt edge and the lower skirt edge of the umbrella skirt are required to be optimized. Therefore, how to increase the creepage distance and improve the antifouling performance while ensuring the mechanical strength of the insulator is still a big problem.
Disclosure of Invention
The present invention is directed to overcome at least one of the above-mentioned disadvantages and drawbacks of the prior art, and to provide a three-umbrella disk suspension insulator. The purpose of the invention is realized based on the following technical scheme:
a three-umbrella-shaped disc-shaped suspension insulator comprises an insulator, a steel cap and steel feet, wherein the insulator comprises a disc-shaped umbrella skirt and a cap-shaped head part positioned at the top of the disc-shaped umbrella skirt, a containing groove is formed in the disc-shaped umbrella skirt, a first concave arc part is arranged at the top of the cap-shaped head part, first protrusions are arranged at two ends of the cap-shaped head part, the steel cap is sleeved on the cap-shaped head part, the steel feet are arranged in the containing groove, and the insulator and the steel cap as well as the insulator and the steel feet are fixedly bonded through an adhesive; the disc-shaped umbrella skirt comprises a first umbrella skirt, a second umbrella skirt and a third umbrella skirt which are sequentially and axially arranged from the downward direction of a hat-shaped head part, one end of the first umbrella skirt is connected with the hat-shaped head part, a second concave arc part is arranged at the joint of the first umbrella skirt and the hat-shaped head part, the other end of the first umbrella skirt is fixedly bonded with the second umbrella skirt through an adhesive, and the second umbrella skirt and the third umbrella skirt are of an integrally formed structure; the first umbrella skirt comprises a first umbrella rib, a second umbrella rib and a third umbrella rib which are sequentially arranged from left to right, the bottoms of the first umbrella rib, the second umbrella rib and the third umbrella rib are positioned on the same horizontal line, one side of the third umbrella rib close to the axial center is provided with a plurality of grooves, the lower skirt edge of the third umbrella skirt is provided with an arc-shaped bulge upwards from the bottom, and the upper skirt edge is provided with an arc-shaped recess upwards from the bottom; the maximum umbrella extension of the first umbrella skirt is larger than that of the second umbrella skirt, the maximum umbrella extension of the second umbrella skirt extends out of the maximum umbrella extension of the third umbrella skirt, and the first umbrella skirt, the second umbrella skirt and the third umbrella skirt are all obliquely arranged downwards and are provided with water dripping edges; the inner side face, opposite to the steel feet, of the disc-shaped umbrella skirt is provided with a plurality of rows of concave-convex grains, and the surface of the disc-shaped umbrella skirt is provided with semiconductor glaze.
Preferably, the structure height of the disk-shaped umbrella skirt is 200 mm-250 mm.
Preferably, the curvature radius of the left edge surface of the first umbrella edge is 30-40 mm, the second umbrella edge and the third umbrella edge are vertically arranged downwards, and the first umbrella edge, the second umbrella edge and the third umbrella edge are provided with drip edges.
Preferably, the maximum nominal disc diameter of the first shed is 230 mm-300 mm.
Preferably, a third concave arc portion is arranged at the center of the inside of a third rib of the first umbrella skirt, a second protrusion is arranged at the top end of the second umbrella skirt, and the third concave arc portion is connected with the second protrusion through an adhesive.
Preferably, a fourth concave arc portion is arranged between the second shed and the second protrusion, and the bottom of the third umbrella rib (18) is positioned above the center of the fourth concave arc portion (121).
Preferably, the radius of curvature of the fourth concave arc portion is 37mm to 45 mm.
Preferably, the height of the accommodating groove is 45 mm-75 mm, the diameter of the accommodating groove is 30 mm-38 mm, and the distance from the bottom end of the third umbrella skirt to the bottom end of the accommodating groove is 55 mm-90 mm.
Preferably, the radius of curvature of the second concave arc portion is 15mm to 20mm, and/or the minimum diameter of the second concave arc portion is 80mm to 120mm, and/or the radius of curvature of the first concave arc portion is 22mm to 30mm, and/or the maximum diameter of the cap-shaped head portion is 100mm to 150 mm.
Preferably, the cement is cement.
The invention can obtain at least one of the following beneficial effects:
the insulating main body adopts a structure of three umbrella skirts, and the three umbrella skirts are obliquely and downwards arranged at a certain angle, so that the insulating main body has an antifouling and self-cleaning function, the flashover phenomenon is prevented, and the creepage distance of the insulator can be greatly increased under the condition of ensuring the mechanical strength; in addition, the first shed also comprises three downward umbrella edges, so that the creepage distance of the insulator can be further increased, and the creepage phenomenon and the voltage impact resistance of the insulator can be prevented. The maximum umbrella extension of the first umbrella skirt is larger than that of the second umbrella skirt and the third umbrella skirt, so that dirt on the second umbrella skirt and the third umbrella skirt which are difficult to clean can be effectively reduced, and the self-cleaning effect of the insulator is improved. The third umbrella rib is provided with a plurality of grooves, so that the contact area between the third umbrella rib and the adhesive can be increased, the connection stability between the third umbrella rib and the second umbrella skirt is enhanced, and the mechanical strength is improved; the third shed inclines to the arc structure that descends, makes dust and rainwater be changeed and rolls from the shed surface, improves antifouling sudden strain of a muscle performance. The disc-shaped umbrella skirt is provided with a plurality of rows of concave-convex grains, so that the connection stability between the disc-shaped umbrella skirt and the steel feet can be enhanced; the surface of the umbrella skirt is provided with the semiconductor glaze, so that the surface of the disk-shaped umbrella skirt can be kept dry all the time, and meanwhile, the surface voltage distribution is more uniform, thereby being capable of keeping higher flashover voltage.
Drawings
Fig. 1 is a schematic structural view of a three-umbrella-type disc suspension insulator according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a conventional three-umbrella disc suspension insulator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the preferred embodiment of the present invention provides a three-umbrella type disc suspension insulator comprising an insulator including a disc-shaped shed 1 and a cap-shaped head 2 on top of the disc-shaped shed 1, a steel cap, and a steel foot. Wherein: the disc-shaped umbrella skirt 1 is internally provided with a containing groove 3, the top of the cap-shaped head part 2 is provided with a first concave arc part 21, two ends of the cap-shaped head part are provided with first bulges 22, the steel cap is sleeved on the cap-shaped head part 2, the steel feet are arranged in the containing groove 3, and the insulator and the steel cap, and the insulator and the steel feet are all bonded and fixed through an adhesive. The disc-shaped umbrella skirt 1 comprises a first umbrella skirt 11, a second umbrella skirt 12 and a third umbrella skirt 13 which are sequentially and axially arranged from the bottom of a hat-shaped head 2, one end of the first umbrella skirt 11 is connected with the hat-shaped head 2, a second concave arc part 14 is arranged at the joint of the first umbrella skirt 11 and the hat-shaped head 2, the other end of the first umbrella skirt is fixedly bonded with the second umbrella skirt 12 through an adhesive, and the second umbrella skirt 12 and the third umbrella skirt 13 are of an integrally formed structure. The arrangement of the first concave arc part 21 and the second concave arc part 14 can increase the contact area with the adhesive and enhance the connection stability between the disk-shaped shed and the steel cap. The first umbrella skirt 11 comprises a first umbrella rib 16, a second umbrella rib 17 and a third umbrella rib 18 which are sequentially arranged from left to right, and the bottoms of the first umbrella rib 16, the second umbrella rib 17 and the third umbrella rib 18 are positioned on the same horizontal line. One side of the third umbrella edge 18 close to the axial center is provided with a plurality of grooves 19, so that the contact area between the third umbrella edge and the adhesive can be increased, and the connection stability between the first umbrella skirt 11 and the second umbrella skirt 12 is enhanced; the lower skirt 131 of the third shed 13 is a protrusion with an arc shape formed from the bottom upwards, and the upper skirt 132 is a recess with an arc shape formed from the bottom upwards, so that the creepage distance of the insulator can be increased compared with the linear structure. The biggest umbrella of first full skirt 11 stretches out to be greater than the biggest umbrella of second full skirt 12 and stretches out, and the biggest umbrella that the biggest umbrella of second full skirt 12 stretches out third full skirt 13 stretches out, and first full skirt 11, second full skirt 12, third full skirt 13 all incline downwards and set up and are equipped with the drip edge. The inner side face, opposite to the steel feet, of the disc-shaped umbrella skirt 1 is provided with a plurality of rows of concave-convex grains 15, so that the contact area between the disc-shaped umbrella skirt 1 and an adhesive can be increased, and the connection stability between the disc-shaped umbrella skirt 1 and the steel feet is enhanced. The surface of the disc-shaped umbrella skirt 1 is provided with the semiconductor glaze 4, the surface resistivity of the semiconductor glaze is high, the disc-shaped umbrella skirt 1 is heated by passing current in operation, the surface of the disc-shaped umbrella skirt 1 is always kept dry, and meanwhile, the surface voltage distribution is uniform, so that the high flashover voltage can be kept.
The insulating main body adopts a structure of three umbrella skirts, and the three umbrella skirts are obliquely and downwards arranged at a certain angle, so that the insulating main body has an antifouling and self-cleaning function, the flashover phenomenon is prevented, and the creepage distance of the insulator can be greatly increased under the condition of ensuring the mechanical strength; in addition, the first umbrella skirt also comprises three umbrella edges which are arranged downwards, so that the creepage distance of the insulator can be further increased, and the creepage phenomenon of the insulator can be prevented. The umbrella skirt is arranged to incline downwards at a certain angle and is provided with a water dripping edge, so that when dust in the air falls onto the surface of the umbrella skirt of the anti-pollution flashover suspension insulator even when the anti-pollution flashover suspension insulator is in a dirty area, as the surface of the umbrella skirt is at a certain inclination, some dust can directly fall below the umbrella skirt, and the umbrella skirt can be washed and cleaned by rainwater, particularly, the third umbrella skirt inclines downwards to form an arc structure, so that the dust and the rainwater can easily fall off from the surface of the umbrella skirt; the maximum umbrella extension of the first umbrella skirt is larger than that of the second umbrella skirt and the third umbrella skirt, so that dirt on the second umbrella skirt and the third umbrella skirt which are difficult to clean can be effectively reduced, and the self-cleaning effect of the insulator is improved.
In the present embodiment, the height of the disk-shaped shed 1 is 200mm to 250 mm.
In this embodiment, the radius of curvature of the left rib surface 161 of the first rib 16 is 30mm to 40mm, the second rib 17 and the third rib 18 are both vertically disposed downward, and the first rib 16, the second rib 17, and the third rib 18 are all provided with drip edges.
In this embodiment, the maximum nominal disc diameter of the first shed 11 is 230mm to 300 mm.
In this embodiment, a third concave arc portion 5 is disposed at the center inside the third rib 18 of the first umbrella skirt 11, a second protrusion 6 is disposed at the top end of the second umbrella skirt 12, and the third concave arc portion 5 is connected to the second protrusion 6 through an adhesive.
In this embodiment, a fourth concave arc portion 121 is disposed between the second shed 12 and the second protrusion 6, and the bottom of the third rib 18 is located above the center of the fourth concave arc portion 121. The arrangement can reduce the accumulation of dust, has good self-cleaning effect and improves the pollution flashover resistance of the insulator.
In the present embodiment, the radius of curvature of the fourth concave arc portion 121 is 37mm to 45 mm. Compared with the prior structure, the curvature radius is large, dirt is easy to slip off or be washed by rainwater, dirt is not easy to be hidden, and the pollution flashover resistance of the insulator is improved.
In this embodiment, the height of the accommodating groove 3 is 45mm to 75mm, the diameter is 30mm to 38mm, and the distance from the bottom end of the third shed 13 to the bottom end of the accommodating groove 3 is 55mm to 90 mm.
In the present embodiment, the radius of curvature of the second concave arc portion 14 is 15mm to 20mm, and/or the minimum diameter of the second concave arc portion 14 is 80mm to 120mm, and/or the radius of curvature of the first concave arc portion 21 is 22mm to 30mm, and/or the maximum diameter of the cap-shaped head portion 2 is 100mm to 150 mm.
In this embodiment, the cement is the cement.
The following are specific preferred embodiments. The insulator is composed as above, specifically:
the disc-shaped shed 1 has a structural height of 220mm, the radius of curvature of the left edge surface 161 of the first rib 16 is 35mm, the maximum nominal disc diameter of the first shed 11 is 267mm, and the maximum shed protrusion is 116 mm. The radius of curvature of the fourth concave arc portion 121 is 40 mm. The height of the containing groove 3 is 54mm, the diameter is 35mm, and the distance from the bottom end of the third umbrella skirt 13 to the bottom end of the containing groove 3 is 70 mm. The radius of curvature of the second concave arc portion 14 is 17.5mm, the minimum diameter of the second concave arc portion 14 is 102mm, the radius of curvature of the first concave arc portion 21 is 27.5mm, and the maximum diameter of the cap-shaped head portion 2 is 124 mm.
The performance parameters are listed in table 1.
Comparative example:
as shown in fig. 2, the structure of the prior three-umbrella type disc-shaped suspension insulator is similar to that of the present invention. The difference lies in that:
the distance between the first umbrella rib 16 and the second umbrella rib 17 is larger than that of the invention, the bottoms of the first umbrella rib 16 and the second umbrella rib 17 are on the same horizontal line, and the bottom of the third umbrella rib 18 is positioned below the bottoms of the first umbrella rib 16 and the second umbrella rib 17. One side of the third rib 18 close to the axial center is not provided with a groove, and the bottom of the third rib 18 is closer to the center of the fourth concave arc portion 121. The upper inclination angle and the lower inclination angle of the second shed 12 are both smaller than those of the present invention, the curvature radius of the fourth concave arc portion 121 is about 8mm, and a third protrusion 122 is further provided between the fourth concave arc portion 121 and the second rib. The third shed 13 is vertically arranged downwards, and the upper shed and the lower shed are not provided with bulges or depressions. The structural height of the disc-shaped umbrella skirt 1 is 191mm, and the distance from the bottom end of the third umbrella skirt 13 to the bottom end of the containing groove 3 is 67 mm. The radius of curvature of the second concave arc portion 14 is 14mm, the minimum diameter of the second concave arc portion 14 is 101mm, the radius of curvature of the first concave arc portion 21 is 19mm, and the maximum diameter of the hat-shaped head portion 2 is 124 mm.
The performance parameters are listed in table 1.
TABLE 1
| The invention | Comparative example | |
| Creepage distance (mm) | 570 | 534 |
| Distance between dry arc (mm) | 300 | 241 |
| Flexural strength (kN) | 14 | 13.6 |
| Power frequency dry flashover voltage (kV) | 130 | 125 |
| Power frequency wet flashover voltage (kV) | 85 | 80 |
| Critical surge flashover voltage, positive (kV) | 210 | 205 |
| Critical impulse flashover voltage, negative electrode (kV) | 270 | 260 |
| Low frequency breakdown voltage (kV) | 170 | 165 |
As can be seen from the data in table 1, compared with the original disc-shaped suspension insulator, the disc-shaped suspension insulator of the present invention has improved performance parameters, wherein: compared with the original method, the creepage distance and the dry arc distance are respectively increased by 36mm and 59mm, and the insulating property of the insulator can be greatly improved, so that the pollution flashover resistance of the insulator is improved. Bending strength test data show that the invention can greatly improve the anti-pollution flashover performance and the performance of the insulator under the impact voltage under the condition of ensuring the mechanical strength and even obtaining higher bending strength.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The three-umbrella-shaped disc-shaped suspension insulator is characterized by comprising an insulator, a steel cap and steel feet, wherein the insulator comprises a disc-shaped umbrella skirt (1) and a cap-shaped head (2) positioned at the top of the disc-shaped umbrella skirt (1), a containing groove (3) is formed in the disc-shaped umbrella skirt (1), a first concave arc part (21) is arranged at the top of the cap-shaped head (2), first bulges (22) are arranged at two ends of the cap-shaped head (2), the steel cap is sleeved on the cap-shaped head (2), the steel feet are arranged in the containing groove (3), and the insulator, the steel cap and the insulator are fixedly bonded through adhesives; the disc-shaped umbrella skirt (1) comprises a first umbrella skirt (11), a second umbrella skirt (12) and a third umbrella skirt (13), wherein the first umbrella skirt (11), the second umbrella skirt (12) and the third umbrella skirt (13) are sequentially and axially arranged from the hat-shaped head (2) downwards, one end of the first umbrella skirt (11) is connected with the hat-shaped head (2), a second concave arc part (14) is arranged at the connection part, the other end of the first umbrella skirt is fixedly bonded with the second umbrella skirt (12) through an adhesive, and the second umbrella skirt (12) and the third umbrella skirt (13) are of an integrally formed structure; the first umbrella skirt (11) comprises a first umbrella rib (16), a second umbrella rib (17) and a third umbrella rib (18) which are sequentially arranged from left to right, the bottoms of the first umbrella rib (16), the second umbrella rib (17) and the third umbrella rib (18) are positioned on the same horizontal line, one side, close to the axial center, of the third umbrella rib (18) is provided with a plurality of grooves (19), the lower skirt edge (131) of the third umbrella skirt (13) is provided with an arc-shaped bulge upwards from the bottom, and the upper skirt edge (132) is provided with an arc-shaped recess upwards from the bottom; the maximum umbrella extension of the first umbrella skirt (11) is larger than that of the second umbrella skirt (12), the maximum umbrella extension of the second umbrella skirt (12) is larger than that of the third umbrella skirt (13), and the first umbrella skirt (11), the second umbrella skirt (12) and the third umbrella skirt (13) are all obliquely and downwards arranged and provided with water dripping edges; the disc-shaped umbrella skirt (1) is provided with a plurality of rows of concave-convex grains (15) on the inner side surface opposite to the steel feet, and the surface of the disc-shaped umbrella skirt (1) is provided with semiconductor glaze (4).
2. A three-umbrella disc suspension insulator according to claim 1, wherein the disc-shaped shed (1) has a structural height of 200mm to 250 mm.
3. The disc-shaped suspension insulator of the three-umbrella type according to claim 1, wherein the radius of curvature of the left edge surface (161) of the first umbrella rib (16) is 30mm to 40mm, the second umbrella rib (17) and the third umbrella rib (18) are vertically disposed downward, and the first umbrella rib (16), the second umbrella rib (17) and the third umbrella rib (18) are provided with drip edges.
4. A three-shed disc suspension insulator according to claim 1, in which the first shed (11) has a maximum nominal disc diameter of 230mm to 300 mm.
5. A disc-shaped suspension insulator of the three-umbrella type according to claim 1, wherein the third shed (11) is provided with a third concave arc portion (5) at the center inside the third rib (18), the second shed (12) is provided with a second protrusion (6) at the top end thereof, and the third concave arc portion (5) and the second protrusion (6) are connected by an adhesive.
6. A three-umbrella disc suspension insulator according to claim 1, wherein a fourth concave arc (121) is provided between the second shed (12) and the second protrusion (6), and the bottom of the third rib (18) is located above the center of the fourth concave arc (121).
7. A three umbrella disc suspension insulator according to claim 6, wherein the fourth concave arc portion (121) has a radius of curvature of 37mm to 45 mm.
8. A three-umbrella disk-shaped suspension insulator according to claim 1, wherein the height of the receiving groove (3) is 45mm to 75mm, the diameter is 30mm to 38mm, and the distance from the bottom end of the third shed (13) to the bottom end of the receiving groove (3) is 55mm to 90 mm.
9. A triple-umbrella disc suspension insulator according to claim 1, wherein the radius of curvature of the second concave arc (14) is between 15mm and 20mm, and/or the minimum diameter of the second concave arc (14) is between 80mm and 120mm, and/or the radius of curvature of the first concave arc (21) is between 22mm and 30mm, and/or the maximum diameter of the cap-shaped head (2) is between 100mm and 150 mm.
10. A three-umbrella disc suspension insulator according to claim 1, wherein said cement is cement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110526447.2A CN113113193A (en) | 2021-05-14 | 2021-05-14 | Three-umbrella-shaped disk-shaped suspension insulator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110526447.2A CN113113193A (en) | 2021-05-14 | 2021-05-14 | Three-umbrella-shaped disk-shaped suspension insulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117253682A (en) * | 2023-09-11 | 2023-12-19 | 连云港石港高压电瓷有限公司 | Disk-shaped cementing suspension porcelain insulator |
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2021
- 2021-05-14 CN CN202110526447.2A patent/CN113113193A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117253682A (en) * | 2023-09-11 | 2023-12-19 | 连云港石港高压电瓷有限公司 | Disk-shaped cementing suspension porcelain insulator |
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